Linear Motor Spotting Device for Automated Weight Assistance
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Solution Overview
Problem
Conventional weight lifting exercises require a human spotter to prevent accidents and provide assistance, which limits workout times and locations and is prone to human error.
Innovation Solution
A servo motor-based spotting device with a linear motor system that uses a magnetic shaft and electromagnetic coils to provide resistance and assistance during weight lifting exercises, eliminating the need for a human spotter.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a human spotter is used to support the weight load, then safety and assistance during weight lifting are improved, but device complexity and dependency on human resources increase
Solution Approach 1:
The spotting device enables self-service by using a linear motor system to automatically provide spotting assistance without requiring a human spotter. The system monitors the user's lifting capability and provides appropriate support through the linear motor, allowing users to safely exercise independently while maintaining reliability.
Solution Approach 2:
The patent replaces the mechanical human spotter system with an automated linear motor system. The linear motor uses electromagnetic fields to generate the spotting force, substituting human physical intervention with an electromechanical system that can reliably detect and respond to user needs without human error or fatigue.
2Object-affected harmful factors
If a human spotter is used to prevent accidents, then injury prevention is improved, but ease of operation and accessibility are worsened due to limited availability
Solution Approach 1:
The spotting device provides automated injury prevention through self-service operation. The linear motor system continuously monitors the weight lifting activity and automatically intervenes when safety thresholds are approached, eliminating the need for users to coordinate with human spotters and making safe exercise accessible at any time and location.
Solution Approach 2:
The system employs feedback mechanisms where sensors monitor the user's lifting performance and the linear motor's output in real-time. This feedback loop enables the system to dynamically adjust spotting assistance and automatically prevent injuries by detecting when the user cannot safely continue, thereby improving accessibility without compromising safety.
3Extent of automation
If a linear motor system is used to provide spotting assistance, then automation and independence are improved, but device complexity increases
Solution Approach 1:
The linear motor system serves multiple functions within a single integrated unit: it provides spotting assistance, monitors user performance, controls weight movement, and ensures safety. This multi-functionality reduces the need for separate components and simplifies the overall system architecture, achieving high automation without proportionally increasing complexity.
Solution Approach 2:
The linear motor acts as an intermediary between the user and the weight, mediating the force interaction. This intermediary component simplifies the control architecture by providing a single point of automated intervention that can modulate assistance levels, thereby achieving sophisticated automation through a focused, multi-functional component rather than multiple complex subsystems.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The device ensures safe and efficient weight lifting by providing adjustable resistance and assistance, reducing the risk of injury and human error, and allowing for independent workout sessions.
Implementation Method 1
A servo motor-based spotting device with a linear motor system that uses a magnetic shaft and electromagnetic coils to provide resistance and assistance during weight lifting exercises
Data Source
AI summary
A spotting device for use during exercise routines is provided where a linear motor includes a forcer that travels along a magnetic shaft to provide a resistance force in response to a force generated by a weight in order to provide assistance and safety to a user performing the exercise routine.